I am sorry to hear your sitch has not improved. I will re state what I said before. "IF" she is serious about her faith her actions will reflect it, not words. The "biblical" way to reconciliation is through confession, repentance, and restitution. Having said that, I do not expect us who live in this "world" to see this happen very often nor am I advocating she would do it to you. What I am alludeing to is; she should do it before God if she were serious.
I think some fantastic points are made on this thread, and the real issue is; right now her "faith" is smoke and mirrors! I also see you are handling this sitch with dignity and respect for yourself and the kids. I do not have any other points to offer at this time but you are on the right road in my humble opinion. Guard your heart at this time and be anxious for nothing knowing the Good Lord will grant your prayers according to his will.
The serenity prayer is a wonderful suggestion.
Married:10 years D final 8/28/08 10 minutes is all it took Life goes on and DB was no small part in growing from the Divorce!